foldingknife
nounUK /ˈfəʊldɪŋ naɪf/
US /ˈfoʊldɪŋ naɪf/
A folding knife is a knife with a blade that folds into the handle.
He carried a small folding knife in his pocket for camping.
OTHER MEANINGS
2. A knife whose blade pivots on a hinge to close safely.
The folding knife clicked shut and fit neatly in his hand.
3. A compact cutting tool often used by campers and hikers.
She packed a folding knife for the hiking trip.
4. A type of utility knife with a blade that retracts into the grip.
The worker used a folding knife to open the box.